Printer Control Device Predicts Developer Depletion
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Solution Overview
Problem
Existing printer prediction methods fail to accurately estimate the date when a printer will run out of developer, as they do not consider changes in usage rates over time, leading to premature depletion during periods of high usage.
Innovation Solution
A control device that calculates future remaining amounts of print material by determining the greatest change in usage per unit time and uses this information to predict when the printer will be unable to print, ensuring timely cartridge replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a straight line prediction method is used to estimate the date of being incapable of printing, then the prediction process is simple, but the prediction accuracy deteriorates when usage amount changes
Solution Approach 1:
The patent applies dynamics by transitioning from a static straight line prediction method to a dynamic prediction method that adapts to changing usage patterns. The system now calculates multiple change values representing different usage scenarios and selects the most appropriate prediction based on current conditions, allowing the prediction model to dynamically respond to varying print volumes and usage amounts.
Solution Approach 2:
The patent implements parameter changes by introducing multiple change values (first change value, second change value, etc.) that represent different usage scenarios. Instead of using a single fixed prediction parameter, the system calculates multiple potential future values based on different change rates and selects the appropriate prediction, thereby adapting to changing usage conditions without increasing overall system complexity.
2Ease of manufacture
If the prediction does not consider usage amount changes, then the calculation is straightforward, but the remaining amount may become incapable of printing earlier than predicted
Solution Approach 1:
The patent applies preliminary action by calculating multiple potential future values in advance, each representing a different usage scenario. The system prepares multiple change values and corresponding future predictions before actual usage occurs, then selects the most appropriate prediction based on current conditions. This allows the system to account for potential usage variations without complicating the real-time calculation process.
Solution Approach 2:
The patent implements feedback by continuously monitoring actual usage amounts and comparing them against predicted values. The system calculates multiple change values based on historical data and uses this feedback to refine future predictions. This feedback mechanism ensures that the prediction remains reliable even as usage patterns change over time.
Data Source
AI summary
A control device may obtain, at each of a plurality of sets of date-and-time, a current value related to a current remaining amount of a print material used by the print performing unit. The control device may calculate N1 change values by using a plurality of current values obtained at the plurality of sets of date-and-time, each change value being related to a change per unit time of a remaining amount of the print material. The control device may specify a first greatest change value among the N1 change values. The control device may perform a first prediction process that includes calculating a first future value by using the first greatest change value, the first future value being related to a future remaining amount of the print material, and a first output process using the first future value in a case where the first prediction process is performed.